TamsinYou have been choosing. For four years, every Friday, you have been choosing, and nobody in this school knows they are living in a building where the choice happens.

HalvardYes.

TamsinThat is the worst thing anybody has ever said to me in this building and I cannot work out why I am not angry.

HalvardBecause it is a relief. Somebody is deciding and it is not a formula. The formula is a story we tell students so they can believe the number means something.